132 



FAMILY IT. OAEABIDiE. 



basal impressions rather dee]), smooth. Elytral striae very line; intervals 

 nearly flat, finely alutaceous ; fourth and fifth dorsal punctures on or near 

 the second stria, the others near the third. Length 7-8 mm. 



Frequent in the northern half of the State ; not taken south of 

 Putnam and Vigo counties. Hibernates. January 7-October 26. 



223 (806). Platynus stbiatopunctatus Dei., Spec. Ill, 1827, 167. 

 Elongate, rather slender. Bronzed black or piceous, shining; first 



joint of antenme and legs dark reddish-yellow. Thorax oval, sides rounded 

 into base ; margins slightly wider and more strongly reflexed toward the 

 base than in nutans; impressions deep, finely and sparsely punctured. 

 Elytral stria? moderately deep, distinctly punctured ; intervals slightly con- 

 vex, alutaceous, the third with five or six punctures. Length 6-7.5 mm. 



Lake, Vigo, Knox, Dubois ; and Posey counties ; scarce. April 



18-September 3. 



224 (S07). Platynus albicrus Dej., Spec. Ill, 1827, 158. 



Elongate, slender. Piceous, feebly bronzed, shining. Thorax sub- 

 quadrate, slightly longer than wide, margin of basal half wider and more 

 reflexed, hind angles obtuse; basal impressions narrow, deep, not punc- 

 tured. Elytral stria? rather deep, not punctured; intervals moderately 

 convex, distinctly alutaceous, the third with three dorsal punctures. Length 

 6.5-7.5 mm. 



Knox County; rare. Two specimens from the margins of the 

 cypress swamp. July 4- July 9. 



*225 (814). Platynus octopunctatus Fab., Ent. Syst. 

 Suppl., 1798, 55; Say, II, 476. 

 Elongate, rather slender. Color above as given in key ; 

 under surface shining blackish-green. Thorax wider than 

 long, sides rounded into base, very finely margined; 

 basal impressions small, deep, not punctured. Elytral 

 stria? fine, not or indistinctly punctured ; intervals nearly 

 flat, alutaceous, the third with four (rarely three or 

 five) punctures, each set in a large quadrate impression. 

 Length 7-7.5 mm. (Fig. 76.) 



Lake, Porter, Putnam and Dubois counties, rare: 

 Fig. 76, x 4. Vigo County, frequent. Hibernates. February 

 14-November 4. Occurs on slopes of sparsely 

 wooded hills, usually in sandy localities. 



22<; (815). Platynus placidus Say, Trans. Amer. Phil. Soc, II, 1823, 43; 

 ibid. II, 469. 



Elongate, moderately broad. Head and thorax greenish-black; elytra 

 bluish-black, subopaque. Thorax subquadrate, slightly wider than long; 

 basal impressions wide and rather shallow. Elytral stria? very fine, not 

 punctured; intervals slightly convex, distinctly alutaceous; dorsal punc- 

 tures five or six, the apical two on second stria, the others on or near 

 third. Length 7.5-9 mm. 



